Lucario

Steel

Lucario is a strong wallbreaker for Steel teams thanks to its access to Swords Dance making it a potent setup sweeper. Extreme Speed allows Lucario to also be a fantastic late-game cleaner against offensive teams. Lucario helps Steel teams in many matchups, such as against Dark, Normal, and opposing Steel, as it is capable of taking on threatening Pokemon such as Mandibuzz, Chansey, and Heatran. However, Lucario does not provide any defensive utility to Steel teams and compounds the natural weakness to Fire-, Fighting-, and Ground-type attacks. Due to Lucario's rather middling Speed, it is threatened by most speedy attackers and relies on Extreme Speed to take on faster Pokemon such as Tapu Koko and Mega Charizard X, which would otherwise beat it. Lucario also does not appreciate being burned or paralyzed, and it competes for a slot on Steel teams with other Swords Dance sweepers such as Bisharp, which can take on Psychic-type Pokemon such as Victini and Mega Latios.

Fighting

Lucario's great secondary Steel typing, access to Swords Dance, and access to strong priority moves in Bullet Punch and Extreme Speed make it a decent offensive option for Fighting teams. Its typing gives Lucario a neutrality to all of Fighting's weaknesses and allows it to become effective in matchups such as Fairy and Psychic. Additionally, it offers utility in matchups like Dragon thanks to its numerous resistances and immunities. Lucario is the only Pokemon in the metagame with access to both Swords Dance and Extreme Speed, compensating for its average Speed stat and allowing Lucario to wallbreak while potentially avoiding revenge killers such as Greninja after a boost. However, it is often very difficult to successfully set up with Lucario, as its average Speed, bad bulk, and dependency on Life Orb in order to wallbreak make it extremely easy to wear down. Lucario's typing, despite offering many useful resistances, leaves it weak to very common offensive types like Fighting, Ground, and Fire, allowing revenge killers such as Garchomp and Infernape to easily check it. Lastly, it is often very difficult to fit Lucario on teams, as it shares a typing with Fighting's best entry hazard setter, Cobalion. Other setup sweepers such as Breloom also give Lucario competition, taking on threats that Lucario cannot, such as Swampert.